DISCOVER THE INVISIBLE: Stimulate your children's scientific curiosity and knowledge in a fun way with this optical microscope which will immerse them in the fascinating world of cells. It works with 2 AA - 1.5V batteries, batteries not included CONTENTS: This observation kit contains: 1 microscope with 3 types of magnification 100x, 400x, 1200x, 10 accessories (screwdriver, 3 support blades, dummy scalpel and knife, tweezers, 2 vials and 1 collection box) and 1 manual of use A GREAT GIFT: Whether you are looking for an activity for the holidays, an original birthday or a fun family experience, our kit is the ideal choice. Let your child become a biologist and go in search of cells! PLAY AS A FAMILY: Parents will be able to guide their children, answer their questions and encourage discussions about biology, they will strengthen their bonds while awakening children's scientific curiosity thanks to our products